This closes #752, fix incorrectly merged cells on duplicate row, and new formula function: LOWER, PROPER, UPPER

Author: xuri

README.md

@@ -97,7 +97,7 @@ func main() {
 
 ### Add chart to spreadsheet file
 
-With Excelize chart generation and management is as easy as a few lines of code. You can build charts based off data in your worksheet or generate charts without any data in your worksheet at all.
+With Excelize chart generation and management is as easy as a few lines of code. You can build charts based on data in your worksheet or generate charts without any data in your worksheet at all.
 
 <p align="center"><img width="650" src="./test/images/chart.png" alt="Excelize"></p>
 
@@ -111,16 +111,40 @@ import (
 )
 
 func main() {
-    categories := map[string]string{"A2": "Small", "A3": "Normal", "A4": "Large", "B1": "Apple", "C1": "Orange", "D1": "Pear"}
-    values := map[string]int{"B2": 2, "C2": 3, "D2": 3, "B3": 5, "C3": 2, "D3": 4, "B4": 6, "C4": 7, "D4": 8}
+    categories := map[string]string{
+        "A2": "Small", "A3": "Normal", "A4": "Large", "B1": "Apple", "C1": "Orange", "D1": "Pear"}
+    values := map[string]int{
+        "B2": 2, "C2": 3, "D2": 3, "B3": 5, "C3": 2, "D3": 4, "B4": 6, "C4": 7, "D4": 8}
     f := excelize.NewFile()
     for k, v := range categories {
         f.SetCellValue("Sheet1", k, v)
     }
     for k, v := range values {
         f.SetCellValue("Sheet1", k, v)
     }
-    if err := f.AddChart("Sheet1", "E1", `{"type":"col3DClustered","series":[{"name":"Sheet1!$A$2","categories":"Sheet1!$B$1:$D$1","values":"Sheet1!$B$2:$D$2"},{"name":"Sheet1!$A$3","categories":"Sheet1!$B$1:$D$1","values":"Sheet1!$B$3:$D$3"},{"name":"Sheet1!$A$4","categories":"Sheet1!$B$1:$D$1","values":"Sheet1!$B$4:$D$4"}],"title":{"name":"Fruit 3D Clustered Column Chart"}}`); err != nil {
+    if err := f.AddChart("Sheet1", "E1", `{
+        "type": "col3DClustered",
+        "series": [
+        {
+            "name": "Sheet1!$A$2",
+            "categories": "Sheet1!$B$1:$D$1",
+            "values": "Sheet1!$B$2:$D$2"
+        },
+        {
+            "name": "Sheet1!$A$3",
+            "categories": "Sheet1!$B$1:$D$1",
+            "values": "Sheet1!$B$3:$D$3"
+        },
+        {
+            "name": "Sheet1!$A$4",
+            "categories": "Sheet1!$B$1:$D$1",
+            "values": "Sheet1!$B$4:$D$4"
+        }],
+        "title":
+        {
+            "name": "Fruit 3D Clustered Column Chart"
+        }
+    }`); err != nil {
         fmt.Println(err)
         return
     }
@@ -156,11 +180,18 @@ func main() {
         fmt.Println(err)
     }
     // Insert a picture to worksheet with scaling.
-    if err := f.AddPicture("Sheet1", "D2", "image.jpg", `{"x_scale": 0.5, "y_scale": 0.5}`); err != nil {
+    if err := f.AddPicture("Sheet1", "D2", "image.jpg",
+        `{"x_scale": 0.5, "y_scale": 0.5}`); err != nil {
         fmt.Println(err)
     }
     // Insert a picture offset in the cell with printing support.
-    if err := f.AddPicture("Sheet1", "H2", "image.gif", `{"x_offset": 15, "y_offset": 10, "print_obj": true, "lock_aspect_ratio": false, "locked": false}`); err != nil {
+    if err := f.AddPicture("Sheet1", "H2", "image.gif", `{
+        "x_offset": 15,
+        "y_offset": 10,
+        "print_obj": true,
+        "lock_aspect_ratio": false,
+        "locked": false
+    }`); err != nil {
         fmt.Println(err)
     }
     // Save the spreadsheet with the origin path.

README_zh.md

@@ -99,7 +99,7 @@ func main() {
 
 使用 Excelize 生成图表十分简单，仅需几行代码。您可以根据工作表中的已有数据构建图表，或向工作表中添加数据并创建图表。
 
-<p align="center"><img width="650" src="./test/images/chart.png" alt="Excelize"></p>
+<p align="center"><img width="650" src="./test/images/chart.png" alt="使用 Excelize 在 Excel 电子表格文档中创建图表"></p>
 
 ```go
 package main
@@ -111,16 +111,40 @@ import (
 )
 
 func main() {
-    categories := map[string]string{"A2": "Small", "A3": "Normal", "A4": "Large", "B1": "Apple", "C1": "Orange", "D1": "Pear"}
-    values := map[string]int{"B2": 2, "C2": 3, "D2": 3, "B3": 5, "C3": 2, "D3": 4, "B4": 6, "C4": 7, "D4": 8}
+    categories := map[string]string{
+        "A2": "Small", "A3": "Normal", "A4": "Large", "B1": "Apple", "C1": "Orange", "D1": "Pear"}
+    values := map[string]int{
+        "B2": 2, "C2": 3, "D2": 3, "B3": 5, "C3": 2, "D3": 4, "B4": 6, "C4": 7, "D4": 8}
     f := excelize.NewFile()
     for k, v := range categories {
         f.SetCellValue("Sheet1", k, v)
     }
     for k, v := range values {
         f.SetCellValue("Sheet1", k, v)
     }
-    if err := f.AddChart("Sheet1", "E1", `{"type":"col3DClustered","series":[{"name":"Sheet1!$A$2","categories":"Sheet1!$B$1:$D$1","values":"Sheet1!$B$2:$D$2"},{"name":"Sheet1!$A$3","categories":"Sheet1!$B$1:$D$1","values":"Sheet1!$B$3:$D$3"},{"name":"Sheet1!$A$4","categories":"Sheet1!$B$1:$D$1","values":"Sheet1!$B$4:$D$4"}],"title":{"name":"Fruit 3D Clustered Column Chart"}}`); err != nil {
+    if err := f.AddChart("Sheet1", "E1", `{
+        "type": "col3DClustered",
+        "series": [
+        {
+            "name": "Sheet1!$A$2",
+            "categories": "Sheet1!$B$1:$D$1",
+            "values": "Sheet1!$B$2:$D$2"
+        },
+        {
+            "name": "Sheet1!$A$3",
+            "categories": "Sheet1!$B$1:$D$1",
+            "values": "Sheet1!$B$3:$D$3"
+        },
+        {
+            "name": "Sheet1!$A$4",
+            "categories": "Sheet1!$B$1:$D$1",
+            "values": "Sheet1!$B$4:$D$4"
+        }],
+        "title":
+        {
+            "name": "Fruit 3D Clustered Column Chart"
+        }
+    }`); err != nil {
         fmt.Println(err)
         return
     }
@@ -156,11 +180,18 @@ func main() {
         fmt.Println(err)
     }
     // 在工作表中插入图片，并设置图片的缩放比例
-    if err := f.AddPicture("Sheet1", "D2", "image.jpg", `{"x_scale": 0.5, "y_scale": 0.5}`); err != nil {
+    if err := f.AddPicture("Sheet1", "D2", "image.jpg",
+        `{"x_scale": 0.5, "y_scale": 0.5}`); err != nil {
         fmt.Println(err)
     }
     // 在工作表中插入图片，并设置图片的打印属性
-    if err := f.AddPicture("Sheet1", "H2", "image.gif", `{"x_offset": 15, "y_offset": 10, "print_obj": true, "lock_aspect_ratio": false, "locked": false}`); err != nil {
+    if err := f.AddPicture("Sheet1", "H2", "image.gif", `{
+        "x_offset": 15,
+        "y_offset": 10,
+        "print_obj": true,
+        "lock_aspect_ratio": false,
+        "locked": false
+    }`); err != nil {
         fmt.Println(err)
     }
     // 保存文件